While i was out of town my girlfriend thought she would be helpful and have my oil changed. I never take my cars to quicky lube shops. She didnt know any better.... Of course they cross threaded and stripped my plug. I bought a new plug and it goes in but will never tighten, just spins and spins. With the gasket i have on its not dripping to bad (right now). Anyone ever have any experience with the self tapping plugs? I would just a size slightly bigger.